BUENOS AIRES—Argentina has hired a private jet for President Cristina Kirchner’s trip to Asia and the Middle East later this month due to the risk that creditors might try to seize her official aircraft. The chartered plane will cost $880,000 for the weeklong trip, or about 20% more than it would cost to travel in Tango 01, the Boeing BA 757 customarily used for presidential travel, the government said Monday. Argentina hired the same U.K.-based aircraft charter company, Chapman Freeborn, in 2010 and 2011 for Mrs. Kirchner’s trips in South America and to Europe….